在热带一年生农业生态系统中,宏观无脊椎动物群体组织成模块
David A Andow1,2, Eliana M G Fontes1, Carmen S S Pires1
1Embrapa Recursos Genéticos e Biotecnologia, Brasília, Federal District, Brazil.
PloS one
|August 3, 2023
概括
有机棕农场中的宏观无脊椎动物群体形成可重复的模块,而不是随机组. 这些模块围绕关键的食草害虫及其自然敌人进行结构化,这证明了对农业生态系统的害虫管理的关注是合理的.
科学领域:
- 农业生态学 农业生态学
- 社区生态学 社区生态学
- 昆虫学 昆虫学是一门学科.
背景情况:
- 农业生态系统的宏观无脊椎动物群体通常被认为是模块化的,围绕食草害虫组织起来.
- 了解这种结构对于有效的害虫管理策略至关重要.
研究的目的:
- 描述巴西一个有机 brassica 农业生态系统中的宏观无脊椎动物社区结构.
- 为了确定社区是随机组合还是组织成可重复的多种组件.
主要方法:
- 在两年内,在六个有机棕农场采集了36个宏无脊椎动物种群的样本.
- 通过隐性变量建模 (boreal) 使用负二项数的无约束排序.
- 社区结构与随机选择进行了比较.
主要成果:
- 宏观无脊椎动物群体不是一个随机的集合.
- 确定了两个不同的,可重复的模块,以主要的食草动物为中心.
- 这些模块因季节性变化而变化,其中一个由类动物和白主导,被一个由 brassica 虫,寄生虫和 coccinellids 代替.
结论:
- 农业生态系统社区表现出非随机的模块化结构.
- 确定的模块支持了在农业生态系统管理中专注于害虫食草动物和相关物种的生态理由.
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